America Now: City of Heartbreak and HopeThey litter the landscape, the thousands of abandoned homes. And just like these buildings, Detroit is a shell of its former self. One third of the people live in poverty. Almost half the adults are illiterate, and about 75 percent of kids drop out of school. Dateline NBC's Chris Hansen returns to his hometown to check in on the city's plans for its future. Read the transcript.

So Very LuckyIn an investigation into state lotteries, Dateline NBC looked at a list of the most frequent winners in eight states. In almost every case, lottery retailers — or their relatives — were among the top winners. Why? Watch NBC’s Chris Hansen’s two-part report here.

Nicholas Cosmo: A Madoff in the making?Bernard Madoff may have run the world's biggest Ponzi scheme - but many other swindlers are out there. NBC’s Chris Hansen reports on Nicholas Cosmo, who allegedly duped investors out of millions.

Inside the financial crisis: Mortgage madnessDateline gets to the bottom of how bad loans and greed wrecked the U.S. economy in this hour-long investigation. Hear from Countrywide insiders and whistleblowers who have never spoken publicly before.

Reality bites updateNBC’s Chris Hansen has an update on Gemase Simmons, the man who scammed seven people into thinking they were on the path to reality TV stardom and supermodel success. Watch the full hour here.